Linux System Administrator
Core
Ensure availability, performance, and security of Linux server environments and related services for multiple clients through operations, automation, and Level 2/3 support.
Role type
Linux System Administrator (Shared Services)
Builds
On-prem and cloud Linux infrastructure, shared services (DNS, NTP, SMTP, web/file servers), and virtualization/container platforms.
Domain
IT Operations / Linux Infrastructure / Multi-tenant Shared Services
Deliverable
production ML models | product features | dashboards & analysis | research | client delivery | infrastructure | physical/clinical work
Required skills
Linux administration (Ubuntu/Debian/CentOS/RHEL), system hardening, user/group management, Bash scripting, configuration management (Ansible/Puppet/Chef/SaltStack), monitoring (Zabbix/Prometheus/Nagios/Grafana), incident management, capacity planning, networking basics (TCP/IP/DNS/routing), backup and recovery testing.
Preferred skills
Virtualization (VMware/KVM), containerization (Docker/Kubernetes), Infrastructure as Code (Terraform/CloudFormation), cloud platforms (AWS/Azure/GCP), CI/CD tools, security frameworks (CIS/ISO/NIST).
Technologies
Ubuntu, Debian, CentOS, RHEL, Zabbix, Prometheus, Nagios, Grafana, Ansible, Puppet, Chef, SaltStack, VMware, KVM, Docker, Kubernetes, Terraform, CloudFormation, AWS, Azure, GCP, Apache, Nginx, Bash, Python, SSH, TCP/IP, DNS, HTTP/HTTPS.
Responsibilities
Install, configure, and maintain Linux servers; perform patching, upgrades, and system hardening; manage users, groups, and access policies; administer shared services (DNS, NTP, SMTP, web/file servers); maintain and optimize virtualization and container platforms; configure and maintain monitoring and alerting tools; investigate and resolve incidents affecting shared systems; respond to alerts within defined SLAs during on-call duty; apply security best practices and hardening guidelines; test recovery and disaster scenarios; automate recurring operational tasks using scripting and configuration management tools; create and maintain technical documentation and runbooks.
Seniority
Mid-level (3–5 years experience), hands-on IC